Ch. 19 (Acids and Bases)

According to the BrØnsted-Lowry theory, a base is a(n) ______________.

• electron pair acceptor

• hydrogen ion donor

• hydrogen ion acceptor

• electron pair donor

Which one of the following could not be a BrØnsted-Lowry acid?

• H₂O

• H₃O⁺

• NH₄⁺

• BF₃

When HClO₄ ionizes in water, ClO₄^- is the ______________.

• Acid

• Base

• Conjugate acid

• Conjugate base

H₂SO₄ is a ______________.

• Monoprotic acid

• Monoprotic base

• Diprotic acid

• Diprotic base

pH is defined as ______________.

• Log [H⁺]

• −Log [H⁺]

• Log [OH^-]

• -Log [OH^-]

When a solution has a pH of 4, what is the pOH of that solution?

• 10

• 4

• 18

• 7

A Lewis acid is a(n) ____.

• electron pair donor 

• hydrogen ion donor 

• electron pair acceptor

• substance that contains a hydroxide group

A solution with a small K_b is a ____.

• weak acid 

• weak base 

• strong acid

• strong base

What is the pH of a neutral solution such as pure water? 

• 0 

• 7

• 14

• 1.0 × 10^–14

Solutions that resist changes in pH are called ____.

• titrants 

• salts

• conjugate pairs 

• buffers